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DEX-450 PDF DEMO:
QUESTION NO: 1
A developer needs to display all of the available fields for an object.
In which two ways can the developer retrieve the available fields if the variable myObject represents the name of the object? (Choose two.)
A. Use myObject.sObjectType.getDescribe().fieldSet() to return a set of fields.
B. Use Schema.describeSObjects(new String[]{myObject})[0].fields.getMap() to return a map of fields.
C. Use mySObject.myObject.fields.getMap() to return a map of fields.
D. Use getGlobalDescribe().get(myObject).getDescribe().fields.getMap() to return a map of fields.
Answer: B,C
QUESTION NO: 2
The following Apex method is part of the ContactService class that is called from a trigger:
public static void setBusinessUnitToEMEA(Contact thisContact){ thisContact.Business_Unit__c =
"EMEA" ; update thisContact; } How should the developer modify the code to ensure best practice are met?
A. Public static void setBusinessUnitToEMEA(List<Contact> contacts){
for(Contact thisContact : contacts){
thisContact.Business_Unit__c = 'EMEA' ;
update contacts[0];
}
}
B. Public void setBusinessUnitToEMEA(List<Contact> contatcs){
contacts[0].Business_Unit__c = 'EMEA' ;
update contacts[0];
}
C. Public static void setBusinessUnitToEMEA(Contact thisContact){
List<Contact> contacts = new List<Contact>();
contacts.add(thisContact.Business_Unit__c = 'EMEA');
update contacts;
}
D. Public static void setBusinessUnitToEMEA(List<Contact> contacts){
for(Contact thisContact : contacts) {
thisContact.Business_Unit__c = 'EMEA' ;
}
update contacts;
}
Answer: C
QUESTION NO: 3
A developer working on a time management application wants to make total hours for each timecard available to application users. A timecard entry has a Master-Detail relationship to a timecard.
Which approach should the developer use to accomplish this declaratively?
A. A Roll-Up Summary field on the Timecard Object that calculates the total hours from timecard entries for that timecard
B. A Visualforce page that calculates the total number of hours for a timecard and displays it on the page
C. A Process Builder process that updates a field on the timecard when a timecard entry is created
D. An Apex trigger that uses an Aggregate Query to calculate the hours for a given timecard and stores it in a custom field
Answer: A
QUESTION NO: 4
Which two statements are true about using the @testSetup annotation in an Apex test class?
(Choose two.)
A. The @testSetup annotation cannot be used when the @isTest(SeeAllData=True) annotation is used.
B. Test data is inserted once for all test methods in a class.
C. Records created in the @testSetup method cannot be updates in individual test methods.
D. The @testSetup method is automatically executed before each test method in the test class is executed.
Answer: D
QUESTION NO: 5
Which two are best practices when it comes to component and application event handling?
Choose 2 answers
A. Handle low-level events in the event handler and re-fire them as higher-level events. (Missed)
B. Reuse the event logic in a component bundle, by putting the logic in the helper. (Missed)
C. Try to use application events as opposed to component events.
D. Use component events to communicate actions that should be handled at the application level.
Answer: A,B
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Updated: May 28, 2022